[PATCH] D124231: [RISCV] Merge addi into load/store as there is a ADD between them

[Hsiangkai Wang via Phabricator via llvm-commits]

HsiangKai created this revision.
HsiangKai added reviewers: asb, craig.topper, luismarques.
Herald added subscribers: sunshaoce, VincentWu, luke957, StephenFan, vkmr, frasercrmck, evandro, apazos, sameer.abuasal, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, jrtc27, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar, hiraditya, arichardson.
Herald added a project: All.
HsiangKai requested review of this revision.
Herald added subscribers: llvm-commits, pcwang-thead, eopXD, MaskRay.
Herald added a project: LLVM.

This patch adds peephole optimizations for the following patterns:

(load (add base, (addi src, off1)), off2)

  -> (load (add base, src), off1+off2)

(store val, (add base, (addi src, off1)), off2)

  -> (store val, (add base, src), off1+off2)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D124231

Files:
  llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
  llvm/test/CodeGen/RISCV/large-stack.ll
  llvm/test/CodeGen/RISCV/mem.ll
  llvm/test/CodeGen/RISCV/mem64.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D124231.424382.patch
Type: text/x-patch
Size: 7317 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220422/25142187/attachment.bin>